Server Administration :: Column Limit Same For All Types Of Table
Aug 10, 2010
Question 1: What is the no of column limits in a single table? Is it same for all type of tables.
Question 2: How to estimate the size for a table in advance with "undo generation amount, index size, redo log size"?
Question 3: What is the real time scenario for creating a table on another schema?
Question 4:I read the below line in a document, but I'm not able to understand it
"we can't move types and extent tables to a different schema when the original data still exists in the database"?
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Feb 15, 2011
How to free up the tablespace size when it reaches its threshold (Max limit)?
Say for example USERS & SYSAUX tablespace reaches above 90%.
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Aug 8, 2011
I want to drop a column in a huge table which contain about 420,000,000 rows,i use the alter table drop coumn command to execute,and found it takes a long time and generate huge redo.
Is there any quickly way to drop a column in a huge table?
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Dec 30, 2010
I have a table with two clob columns and need to manually allocate space to the table and to its lob segment. Is the following command correct?
--to allocate extent to the table
alter table emp allocate extent;
--the table has columns named col1 and col2 which are clob
--to allocate extents to the columns
alter table emp modify lob (col1) (allocate extent (size 10m))
/
alter table emp modify lob (col2) (allocate extent (size 10m))
/
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Jan 18, 2012
I am trying to reoarganise a tablespace with Enterprise Manager from manual to automatic, but script generation gives the following warnng :
Quote:Reorganization includes a table with a LONG column. To support reorganization of tables with LONG columns that are greater than 32Kbytes the external procedure MGMT$REORG_MOVELONGCOMMAND must be configured properly. It has been determined this external procedure is not currently configured as expected. Configure SQL*Net appropriately to allow it to call the external procedure service process.
I made changes suggested by [URL] ..... in the section Using Reorganize Objects with LONG Columns but the warning persists. I noticed however that $ORACLE_HOME/lib/libnmuc.so is an empty file (0 bytes).
Oracle Database 10g 10.1.0.2.0
Solaris (SunOS 5.9 Generic_117171-07 (64-bit))
Oracle home /data/lun1/oracle/product/10.1.0/db_1
{ORACLE_HOME}/network/admin/tnsnames.ora
# tnsnames.ora Network Configuration File: /usr/oracle/product/10.1.0/db_1/network/admin/tnsnames.ora
# Generated by Oracle configuration tools.
[code]....
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Apr 3, 2010
I have following structures:
SQL> CREATE TYPE address_typ AS OBJECT (line1 VARCHAR2(20), city VARCHAR2(20), COUNTRY VARCHAR2(20));
2 /
Type created.
SQL> CREATE TYPE phone_typ AS OBJECT (area_cd VARCHAR2(10), phone# VARCHAR2(10));
2 /
Type created.
SQL> CREATE TYPE phone_list_typ AS TABLE OF phone_typ;
[code]...
My questions are:
1. I have created an object table person_obj of parent type. I have not created object tables of salesperson_typ and customer_typ and want to store data related to both in person_obj. What is the difference between storing data in an object table of parent type and object table of subtypes? In which case should I consider storing data of all subtypes in an object table of parent type instead of object tables of individual subtypes?
2. Second question is regarding validating the column values before the creation of object instance. Suppose before creating an instance of salesperson_typ, I want to check if salary is NOT NULL and greater than 0. I guess constructor is the only option to achieve this but how full-proof it is if constructors are used for this purpose? Is there any other alternate way?
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Mar 4, 2013
need to use Extend() in nested tables in Oracle? What could be the problem if I do not use this method in my code?
I have a nested collection type (TABLE OF VARCHAR2(32)) declared in my package. My stored procedure takes the TABLE type as input and inserts that data into a database table.
I see that my code works fine without using EXTEND method.
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Oct 9, 2012
I have a problem with one table.. First of all:
Oracle Database 11g Enterprise Edition Release 11.2.0.2.0 - 64bit Production
The problem table resides in a locally managed tablespace. About 10 millions records is added in this table every day. After 36 hours all these records moved to another (partitioned) table, so the size of data in the problem table always about 75 Gb. But the size of table is reached 157 Gb today, and it still growing. The results of dbms_space.space_usage are showed below:
Size of blocks with:
0-25% free space: 4726784
25-50% free space: 17301504
50-75% free space: 24920064
75-100% free space: 102418669568
full blocks: 54761594880Thus, a lot of blocks have 75-100% free space but the table constantly growing: during last 9 days the size increased from 123 to 157 Gb.
how to stop the table growing? It there any way to limit the table size in locally managed tablespace?
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Aug 14, 2012
I have been trying to use case statements with oracle table type by really not sure how to go about it. I know it might be simple but it been giving me hard time.
Here is my Cursor:
CURSOR c_chk_style IS
SELECT DISTINCT 1
FROM TABLE(CAST(I_message.ExtOfXOrderDesc_TBL(1).ExtOfXOrderSkuDesc_TBL AS "RIB_ExtOfXOrderSkuDesc_TBL")) item_diff,
[code]...
Now i know that the table type "RIB_ExtOfXOrderSkuDesc_TBL" will be always populated but the table type "RIB_ExtOfXOrderPackDesc_TBL" may not be populate and can be null. So i want to run the exists against the "RIB_ExtOfXOrderPackDesc_TBL" aliased pack_diff only if it is populated. If its null i dont want to run the exists clause.
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Feb 11, 2013
What is the limit on number of partitions on a table.on many forums , 1024k-1 is given the maximum limit.But Exactly , I am not able to understand this 1024k-1.
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Oct 24, 2013
I'm using TimesTen Release 11.2.1.9.8 (64 bit Linux/x86_64) 1. is there any limit in size for a single table. How much a table size can be increased? 2. Is there any limit in number of records in a table?
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Oct 26, 2010
It seems that dml trigger doesn't fire when lob field is being updated using dbms_lob package. As it stated in Oracle documentation:
Quote:Using OCI functions or the DBMS_LOB package to update LOB values or LOB attributes of object columns does not cause Oracle to fire triggers defined on the table containing the columns or the attributes.
I need to know that table was updated (or is about to be updated), how can I do that in case it is lob field that is being updated?
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Sep 10, 2012
I'm trying to get size of CLOB column but not getting any output.
SQL> desc TABLE_STEP_INST234
Name Null? Type
----------------------------------------- -------- ----------------------------
NUM_PENDING_PREREQS NOT NULL NUMBER(10)
OBJID NOT NULL VARCHAR2(31)
OUTFLOW_BITS NUMBER(19)
PARAMS CLOB
PARENT2PROC_INST NOT NULL VARCHAR2(31)
ROOT2PROC_INST NOT NULL VARCHAR2(31)
START_TIME DATE
STATUS NOT NULL NUMBER(2)
[code]...
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Aug 21, 2011
Table contains 10k records,we are going to insert data into another table with FORALL bulk collect limit 1000. if i use 10000 ,it's completed fast compared to 1000 limit.Can u tell me which one is better Limit.
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Sep 11, 2012
Using below script i run stats gather job..But LAST_ANALYZED column is not updated for the table.. Why it was not updated.. My DB version is 11.1.0.7.0
exec DBMS_STATS.GATHER_TABLE_STATS(ownname => 'XXXX', tabname => 'XXXXXX',estimate_percent =>5, method_opt => 'FOR ALL INDEXED COLUMNS SIZE AUTO', degree => 8, granularity => 'ALL',Cascade => TRUE);
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Apr 4, 2011
I was about to move some tables from one table space to another but it seems it is not possible to move partitioned tables between table spaces of different block sizes.
So far the only option I have is to export and then import back the data.
know if there is any way to move a partitioned table between table spaces of different block size?
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Feb 7, 2012
We deleted millions of records from a table.
1.Is it necessary to reorganize a table and index after the deletion of records from table ? Because i see some change in table size after table and index reorganization.
2.Will re org table and index improve the database performance ?
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Jan 11, 2012
my user is trying to drop columns, but she gets below error:
SQL Error: ORA-39726: unsupported add/drop column operation on compressed tables
39726. 00000 - "unsupported add/drop column operation on compressed tables"
i just checked whether table is compressed or not, it is not compressed it seems:
select owner, table_name,COMPRESSION,COMPRESS_FOR from dba_tables
2 where owner = 'EQUIPMENT' AND TABLE_NAME = 'ETHRNT_VRTL_CNXN_HRLY_AGG_SWP';
OWNER TABLE_NAME COMPRESS COMPRESS_FOR
------------------------------ ------------------------------ -------- ------------
EQUIPMENT ETHRNT_VRTL_CNXN_HRLY_AGG_SWP DISABLED
1 row selected. i am able to set one column as UNUSED. and then i am able to see the count accordingly from below view:
select * from DBA_UNUSED_COL_TABS
where owner ='EQUIPMENT' and table_name = 'ETHRNT_VRTL_CNXN_HRLY_AGG_SWP';
but not able to drop the unused columns. if i tried to drop a column directly from the table, that also giving above error.
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Sep 24, 2013
I have csv file which having parent and child related data.i need to load parent data in to parent table and get parent reference id and store in child table with child data. i am not able to find how to get parenet refernce id using control file. In my csv file i have 2 parent name rows. I need to create one A record in parent table and get that parent primary(P_ID) for 'A' record and put into child table for c_name test1 and test2 records.
mydata.csv
---------------
P_Name C_Name
------ ------
A, test1;
A, test2;
B, test3;
B, test4;
C, test5;
C, test6;
D, test7;
D, test8;
1. table parent (P_ID, P_Name)
2. table child (C_ID, C_Name, P_ID)
i need data bello way.
Parent Table data:
P_ID P_Name
----- ------
1A
2B
3C
4D
Child Table data:
C_IDC_NameP_ID
--------------
1test11
2test21
3test32
4test42
5test53
6test53
7test64
8test64
My controll file
-------------------
LOAD DATA
INFILE 'mydata.data'
APPEND
INTO TABLE parent
when (1:1) = 'p'
fields terminated by ',' optionally enclosed by '"' trailing nullcols
[code].....
able to load parent data and generate P_ID, but i am not able to get P_ID for child records.
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Sep 8, 2011
There is a huge table,i want to compress it,how can i do? alter table tb_my_table compress After executed the sql,the size of table have any change.
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Sep 26, 2011
My table can not shrink, why?
SQL> Alter Table tb_hxl_user Shrink Space Cascade;
Alter Table tb_hxl_user Shrink Space Cascade
*
ERROR at line 1:
ORA-10635: Invalid segment or tablespace type
SQL> desc tb_hxl_user;
Name Null? Type
----------------------------------------- -------- ----------------------------
STATEDATE NOT NULL DATE
USERNUMBER NOT NULL VARCHAR2(13)
PROVCODE NOT NULL NUMBER
[code]...
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Dec 4, 2012
I need to copy one table which is having NCLOB column into our new DB(11g) from old DB (10g). As this table having huge records (1 crore) it is difficult to use direct insert statement (INSERT INTO ... SELECT * FROM @remotedb). I don't have DBA privilege to use loader.
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Oct 10, 2013
We are running 11g (11.2.0.3)We have a "working table" that is empty at the beginning of the day.Then we start adding rows (insert) with a key column called STATE with a value of 100.At the same time, there are other apps that pickup data in state 100 , process that data and change that state to 200 or 300.There is also another app that pickup data in state 200 , process that data and change that state to 300 or 400.
So in summary, the data on that table is at the beginning empty, then all the rows are in state 100, they slowly move to different states (200, 300, etc) and by the end of the day, they are all in 400.
My question is what would be the best way to collect stats on this table?
I was thinking to create an hourly job to collect stats on that table:
exec dbms_stats.gather_table_stats (
ownname => 'SCOTT',
tabname => 'WORK_T
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Jan 4, 2012
I have a table: desc STG_XML
Name Null Type
------------------------------ -------- ------------------------
ENTITY_ID NOT NULL VARCHAR2(100 CHAR)
ENTITY_TYPE_ID NOT NULL NUMBER
SOURCE_ID NOT NULL VARCHAR2(512 CHAR)
XML_SCHEMA_ID NOT NULL NUMBER
JOB_ID NOT NULL NUMBER
FINGERPRINT NOT NULL VARCHAR2(100 CHAR)
ENTITY_XML_DATA CLOB()
ARCHIVED NUMBER(1)
CREATION_DATE TIMESTAMP(6)
MODIFICATION_DATE TIMESTAMP(6)
ARCHIVING_DATE TIMESTAMP(6)
CREATED_BY VARCHAR2(50 CHAR)
MODIFIED_BY VARCHAR2(50 CHAR)
The problem is that the data of the table are 40GB while on the DB the table holds 400GB! How can I shrink and reuse that space except from drop/recreate and drop/import?
The table has no initial data, so that I can play with the INITIAL parameter. Data are inserted, updated and deleted all the time. I have run DBMS_ADVISOR which recommended to SHRINK table. I have performed the shrink :
alter table STG_XML shrink space COMPACT;
but I haven't gained any space.
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Oct 17, 2011
How can i check whether a partition tbale have default partition?
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Mar 21, 2007
i want to rename a table that has partitions.
alter table
testora.oldtablename
rename to
testora.newtablename;
ORA-14048: a partition maintenance operation may not be combined with other operations
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Jul 21, 2011
How can i apply composite key on a table?
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Mar 9, 2012
how to find a table is updated and when the table is updated.
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Nov 4, 2010
DDL used to create a table that is partitioned by day, then rolled up to a month using the interval partitioning technique.
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Oct 2, 2012
One of our solaris machines is running Oracle 8.0.3
A table reached the 2 Gb size and oracle failed due to the operating system file size limitation.
The information in the table is not relevant and can be deleted, but the table contains a lot of indexes.
I would like to know the best procedure to delete the information and reduce the size of the file.
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